Makes some sense! According to http://stackoverflow.com/questions/15136264/how-can-i-say-a-file-is-svg-without-using-a-magic-number SVG uses xml (as vector formats are probably primariliy a description of how to draw something instead of a description of the end results ie., bitmaps or what actually got drawn LOL) and I bet that is very compressible. On the other hand, looking at report builder, svg is not one of those that you're going to be able to pull from a column and display as an image (I see listed bmp, gif, jpeg, png, x-png).